Researchers
should consider looking for city lights outside the solar system in the
search for extraterrestrial life, two astronomers say. Avi Loeb of the
Harvard-Smithsonian Center for Astrophysics and Edwin Turner of
Princeton University say they’re going on the assumption aliens would
use Earth-like technologies and that any intelligent life that evolved
in the light from its nearest star is likely to have artificial
illumination that switches on during the hours of darkness. “Looking for
alien cities would be a long shot, but wouldn’t require extra
resources,” Loeb said. “And if we succeed, it would change our
perception of our place in the universe.”
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